Seiko Cal. 6657 - 534

This Hand-Winding model from 1989 features a 39mm Two-Tone case. It features a Green dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-eb9065b6a30b]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1989

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